1. Heidelberg Engineering

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    1. Mentioned In 429 Articles

    2. Structure-Function Correlations in Glaucoma Using Matrix and Standard Automated Perimetry Versus Time Domain and Spectral Domain OCT devices

      Structure-Function Correlations in Glaucoma Using Matrix and Standard Automated Perimetry Versus Time Domain and Spectral Domain OCT devices

      Purpose: To examine the structure-function relationship between two perimetric tests, the Frequency-Doubling Technology (FDT) Matrix and Standard Automated Perimetry (SAP), and two Optical Coherence Tomography (OCT) devices (Time-Domain and Spectral-Domain). Methods: This cross-sectional study included 97 eyes from 29 healthy individuals and 68 individuals with early, moderate, or advanced primary open-angle glaucoma. The correlations between overall and sectorial parameters of retinal nerve fiber layer thickness (RNFL) measured with Stratus and Spectralis OCT and the visual field sensitivity obtained with FDT Matrix and SAP were assessed. The relationship was also evaluated using a previously described linear model. Results: The correlation coefficients ...

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    3. A systematic correlation of morphology and function using spectral domain optical coherence tomography and microperimetry in patients with geographic atrophy

      A systematic correlation of morphology and function using spectral domain optical coherence tomography and microperimetry in patients with geographic atrophy
      ...s suffering from GA of the retinal pigment epithelium (RPE) have been investigated using the Spectralis OCT (Heidelberg Engineering) and the MP1 microperimeter (Nidek Technologies). The point-to-point overlay of morphol...
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    4. Analysis of Macular and Peripapillary Choroidal Thickness in Glaucoma Patients by Enhanced Depth Imaging Optical Coherence Tomography

      Analysis of Macular and Peripapillary Choroidal Thickness in Glaucoma Patients by Enhanced Depth Imaging Optical Coherence Tomography

      Background/Aim: To compare the macular and peripapillary choroidal thickness between normal and glaucoma eyes and find out factors related to choroidal thickness using enhanced depth imaging (EDI) of Heidelberg Spectralis SD-OCT. Study Design: Cross-sectional transverse study. Methods: A total of 108 glaucoma patients and 48 healthy controls were included in the analysis. Choroidal thickness was measured from 6 mm length radial B-scans at the macular and the optic nerve head by EDI OCT. Choroidal thickness was compared between normal controls, normal tension glaucoma (NTG) patients, and primary open-angle glaucoma (POAG) patients. Factors related to choroidal thickness were analyzed by ...

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    5. Segmentation of Choroidal Boundary in Enhanced Depth Imaging OCTs Using a Multiresolution Texture Based Modeling in Graph Cuts

      Segmentation of Choroidal Boundary in Enhanced Depth Imaging OCTs Using a Multiresolution Texture Based Modeling in Graph Cuts

      The introduction of enhanced depth imaging optical coherence tomography (EDI-OCT) has provided the advantage of in vivo cross-sectional imaging of the choroid, similar to the retina, with standard commercially available spectral domain (SD) OCT machines. A texture-based algorithm is introduced in this paper for fully automatic segmentation of choroidal images obtained from an EDI system of Heidelberg 3D OCT Spectralis. Dynamic programming is utilized to determine the location of the retinal pigment epithelium (RPE). Bruch’s membrane (BM) (the blood-retina barrier which separates the RPE cells of the retina from the choroid) can be segmented by searching for the pixels ...

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    6. Reliability and validity of Cirrus and Spectralis optical coherence tomography for detecting retinal atrophy in Alzheimer’s disease

      Reliability and validity of Cirrus and Spectralis optical coherence tomography for detecting retinal atrophy in Alzheimer’s disease

      Background To evaluate and compare the ability of two Fourier-domain optical coherence tomography (OCT) devices to detect retinal and retinal nerve fibre layer (RNFL) atrophy in patients with Alzheimer’s disease (AD) compared with healthy subjects; to test the intra-session reliability of two OCT devices in AD patients and healthy subjects. Methods AD patients (n = 75) and age-matched healthy subjects (n = 75) underwent three Macular Cube 200 × 200 protocols using the Cirrus and Spectralis OCT devices and three 360° circular scans centred on the optic disc using the Cirrus OCT device, the classic glaucoma application, and the new Nsite Axonal ...

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    7. The influence of axial length on confocal scanning laser ophthalmoscopy and spectral-domain optical coherence tomography size measurements: a pilot study

      The influence of axial length on confocal scanning laser ophthalmoscopy and spectral-domain optical coherence tomography size measurements: a pilot study

      Purpose To investigate the influence of axial length on SD-OCT and cSLO size measurements from the Heidelberg Spectralis. Methods In this pilot study, eight emmetropic pseudophakic eyes with subretinal visual implant were selected. The axial length was measured in three short (<22.5 mm), three medium (22.51–25.50 mm) and two long (>25.52 mm) eyes. The known size of subretinal implant sensor field (2800 × 2800 μm) was measured on 15 images per eye with cSLO and SD-OCT. Results The mean axial length was 20.8 ± 0.8 mm in short eyes, 23.3 ± 0.4 mm in ...

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    8. Comparison of slit lamp-adapted optical coherence tomography features of fellow eyes of acute primary angle closure and eyes with open angle glaucoma

      Comparison of slit lamp-adapted optical coherence tomography features of fellow eyes of acute primary angle closure and eyes with open angle glaucoma
      ...fellow eye were compared to 20 patients with open angle glaucoma (OAG). Anterior segment imaging with SL-OCT (Heidelberg Engineering, Heidelberg, Germany) enabled the delineation, by means of automatic signal analysis, o...
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    9. 1-15 of 429 1 2 3 4 ... 27 28 29 »
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  2. About Heidelberg Engineering

    Heidelberg Engineering

    Heidelberg Engineering. Ophthalmology Systems. Heidelberg Engineering has paved the way for quantitative retinal imaging in glaucoma management. The Heidelberg Retina Tomograph was the first instrument of its kind available on the market for the routine glaucoma exam. It follows that Heidelberg Engineering has the longest history and the most experience and knowledge of the subject. The high quality and reproducibility of our products have been proven over time by the accuracy and consistency of glaucoma follow-up exams.
    The reason for this is that Heidelberg Engineering has ensured that there is a solid scientific base to all products.
    The company has always been involved in basic research projects, and our technical knowledge is unsurpassed. Heidelberg Engineering is an extremely innovative company. It is the integrity of research and consistency of approach that enable our products to be used with confidence in the clinical environment. Our track record of product development is exceptional! Look at the development milestones achieved during the past 10 years.

  3. Quotes about Heidelberg Engineering

    1. I am becoming a big fan of spectral-domain OCT, especially Spectralis [Heidelberg Engineering, Vista, Calif.]...To this point with time-domain OCT, I have not been convinced that you can use this technology to follow patients over time. Now, with the faster image acquisition and better axial resolution we see with SD OCT, there is better quantitative peripapillary retinal nerve fiber layer measurement for glaucoma management. The improved accuracy of the OCT segmentation allows for better long-term evaluation of patients.
      Leon W. Herndon in Delving into glaucoma